Japan Flora: Rhi­zomes densely tufted; culms 15-30 cm. long, obtusely angled, nearly glabrous; leaf-blades flat, 1.5-3 mm. wide, the basal sheaths pale brown, fibrous when withered; spikes 3 or 4, ap­proximate, the terminal staminate, linear-clavate, 1.5-3 cm. long, golden-brown, the otliers pistillate, slenderly oblong, erect, 8-20 mm. long, the lower ones usually peduncled, the lowest bract short, sheathing at base; pistillate scales narrow- ovate, golden-castaneous, truncate and mucronate; perigynia 4-5 mm. long, nearly erect, oblong to somewhat fusiform, membranous, light yellow-green, inconspicuously nerved, sparsely appressed-hispidulous, abruptly to gradually ratlier long-beaked, with a 2-toothed apex; stigmas 3. Apr.-June. High mountains.

Shikoku, Kyushu.

var. odontostoma (Kuekenth.) Ohwi. Perigynia narrow, 6-7 mm. long, the beak longer, 2-toothed. Kyushu. For­mosa.

var. glabrior (Ohwi) Ohwi. Perigynia extremely narrow, nearly linear, sparsely appressed- hirsute only along the margins, the beak very long with a deeply 2-toothed apex. Rocky places in high mountains; Honshu (Yamato and Tajima Prov.); rare.